Drosophila Food-Associated Pheromones: Effect of Experience, Genotype and Antibiotics on Larval Behavior

Abstract : Animals ubiquitously use chemical signals to communicate many aspects of their social life. These chemical signals often consist of environmental cues mixed with species-specific signals-pheromones-emitted by conspecifics. During their life, insects can use pheromones to aggregate, disperse, choose a mate, or find the most suitable food source on which to lay eggs. Before pupariation, larvae of several Drosophila species migrate to food sources depending on their composition and the presence of pheromones. Some pheromones derive from microbiota gut activity and these food-associated cues can enhance larval attraction or repulsion. To explore the mechanisms underlying the preference (attraction/repulsion) to these cues and clarify their effect, we manipulated factors potentially involved in larval response. In particular, we found that the (i) early exposure to conspecifics, (ii) genotype, and (iii) antibiotic treatment changed D. melanogaster larval behavior. Generally, larvae-tested either individually or in groups-strongly avoided food processed by other larvae. Compared to previous reports on larval attractive pheromones, our data suggest that such attractive effects are largely masked by food-associated compounds eliciting larval aversion. The antagonistic effect of attractive vs. aversive compounds could modulate larval choice of a pupariation site and impact the dispersion of individuals in nature.
Liste complète des métadonnées

Littérature citée [36 références]  Voir  Masquer  Télécharger

https://hal-univ-bourgogne.archives-ouvertes.fr/hal-01394260
Contributeur : Csga - Université de Bourgogne <>
Soumis le : mardi 26 septembre 2017 - 22:10:23
Dernière modification le : vendredi 8 juin 2018 - 14:50:16
Document(s) archivé(s) le : mercredi 27 décembre 2017 - 17:24:33

Fichier

thibert_2016_vol11_e0151451_pl...
Fichiers éditeurs autorisés sur une archive ouverte

Identifiants

Collections

Citation

Julien Thibert, Jean-Pierre Farine, Jérôme Cortot, Jean-François Ferveur. Drosophila Food-Associated Pheromones: Effect of Experience, Genotype and Antibiotics on Larval Behavior. PLoS ONE, Public Library of Science, 2016, 11 (3), pp.e0151451. 〈http://apps.webofknowledge.com/full_record.do?product=WOS&search_mode=GeneralSearch&qid=1&SID=Z21zhAiqdM3c6qpJGeN&page=1&doc=1〉. 〈10.1371/journal.pone.0151451〉. 〈hal-01394260〉

Partager

Métriques

Consultations de la notice

72

Téléchargements de fichiers

25